Storage battery



Dec. 15, 193%.v c, H. EVERETT lSTORAGE BATTERY Filed April '12. 192e lvlvavlvl w@ l@ ...Q2

x a La" Gf? O'Cgm atented Dec. 15, 1931 ACLA'UD H. EVERETT, OF LONDON, ENGLAND, ASSIGNOR OF ONE-HALF TO GEORGE R.

CARR, OF CHICAGO, ILLINOIS STORAGE Application led April 12,

rlhe object of my invention is to'provide a storage battery grid or plate of a type consisting of a frame comprising horizontally exten ing arms and numerous strips of f sheet metal mounted on such arms, which will be inexpensive to manufacture. Grids or plates of this type are very desirable because they are light in weight and of ample strength, and they are of large capacity, heavy ,discharge rate, and high efliciency but as the strips required to be separately burned or soldered to the arms the` cost of manufacture was great, a single plate requiring, for example, burning at 936 points. By my invention a plate of similar size to that mentioned requires burning only ot 18 points. Other advantages will appear hereafter. My invention therefore consists in the battery grid or plate having the construction described by or included within the appended claims.

In the accompanying drawings:

Fig. 1 lis a side elevation of a plate or grid embodying my invention, the sheet metal strips being shown omitted from one half thereof;

Fig. 2 is an end elevation thereof;

Fig. 3 is a detail view in perspective of a portion of said plate on a larger scale;

Fig. 4 is a detail plan view of the same.

The frame shown in the drawings has a center vertical supporting bar-form member with similar parallel arms 11 extending therefrom on 'opposite sides, the outer endsbeing unconnected or free from one another,

eachV arm being shown as 'diamond shaped in cross section altho if preferred they may be of other shape in cross section. The supporting member 10 for the sake of lightness (since the frame is of lead) is perforated with numerous holes 12 of a size and distribution that will serve the purpose without unduly weakening the member. Said support 10 is extended a substantial distance below the lowermost arm to form a foot` 13 so that there may be a considerable accumulation of sediment in the bottom of the -jar without its reaching to and short circuiting the battery plates. Said foot lits a rubber shoe 14 on the'j ar bottom and is itself BATTERY 1926. .Serial No. 101,505.

thereby insulated as to be safeguarded from short circuiting.

Upon the group of horizontalarms upon each side of the center supporting member 10 are numerous strips 15 of thin or sheet lead placed close together and each strip being transversely crimped or corrugated and each strip having a diamond shaped slot 16 to fit the respective frame arms. Adjacent strips at intervals are connected by integral alternate sides of the strips and thus the whole series of strips on one set of arms are -joined and making it necessary for the adequate connection of all those on one set `o straps 17, these straps being arranged on of arms thereby joined to the arms by burning only at the end strips of nthe group.

The strips 15 are perforated with oblong openings 18 at intervals for the passage of the electrolyte.

The group of united strips may be easily and cheaply manufactured. For example, this may be done by starting with a sheet of lead of proper size and by suitable dies the sheet can be perforated to provide the diamond shape, and circulation holes 16 and 18 and the slots which result in the provision of the straps which connect adjacent strips and the crimping or corrugation of the strips, V

all this beingfdone in one operation. Afterwards the sheet so perforated and crimped can be run thru a suitable machine which will bend the sheet along the lines or row of strip-connecting straps 17 so as to place the strips in parallelism.

It will be understood, of course, that the active material is applied to the grid formed of the arms and strips.

What I claim is:

1. A storage battery plate comprising a frame having s aced arms and a series of 'sheet metal strlps mounted on said arms, and havin connections from the longitudin'al edge o? of another and spaced apart between the ends of the strips. 2.'A storage batte y plate comprising a frame having spaced arms and a series of sheet metal strips mounted on said arms and 'having connections from the longitudinal edge of one strip to the longitudinal edge of another and spaced apart between the ends of the strips, said connections being integral with the strips.

3. A storage battery plate comprising a frame having spaced arms and a series of sheet metal strips mounted on said arms, and having connections from the longitudinal edge of one strip to the longitudinal edge of another and spaced apart between the ends of the strips, said strips being more in num ber than two, and the connections between adjoining strips being alternately at opposite sides of the strips."v f Y j 4. A storage battery platel comprising a frame having spaced arms and a series of sheet metal strips mounted on said arms, and having connections from the longitudinal edge of one strip to the longitudinal edge of another and spaced apart between the ends of the strips, said strips being more in number than two, and the connectionsfbetween adjoining strips being alternately at oppo-l site sides of the strips, said connections being integral with the strips that they Connect and being spaced apart longitudinally of the strips.

" Y 5. A storage battery plate or grid comprisinfr a vertical bar, arms extending horizontally therefrom in opposite directions, the arms being separated throughout their length from the vertical bar outwards, strips mounted on said arms, adjacent strips having integral connections bridging the space between the strips and situated at intervals longitudinally of the strips, said connections extending parallel with said arms, and the strips thus connected being more in number than two, and a foot extending a substantial distance from said bar below the l0wermost arms.

6. A storage battery plate or grid comprising a series of spaced and substantially par-` allel strips spaced apart laterally and formed of sheet metal bent back and forth to form strips that are unconnected at their ends and are connected at their longitudinal edges by integral connecting portions bridging the ap between adjacent strips and spaced apart 1n the direction of length of such edges.

In testimony whereof I hereunto aiix my signature.

CLAUD H. EVERETT. 

